diff --git a/.arclint b/.arclint
--- a/.arclint
+++ b/.arclint
@@ -12,36 +12,43 @@
     "generated": {
       "type": "generated"
     },
+    "json": {
+      "type": "json",
+      "include": [
+        "(^\\.arcconfig$)",
+        "(^\\.arclint$)",
+        "(\\.json$)"
+      ]
+    },
     "merge-conflict": {
       "type": "merge-conflict"
     },
     "nolint": {
       "type": "nolint"
     },
-    "phutil-xhpast": {
-      "type": "phutil-xhpast",
-      "include": "(\\.php$)"
-    },
     "phutil-library": {
       "type": "phutil-library",
       "include": "(\\.php$)"
     },
-    "text": {
-      "type": "text"
+    "phutil-xhpast": {
+      "type": "phutil-xhpast",
+      "include": "(\\.php$)"
     },
     "spelling": {
       "type": "spelling"
     },
+    "text": {
+      "type": "text"
+    },
     "xhpast": {
       "type": "xhpast",
       "include": "(\\.php$)",
       "severity": {
         "16": "advice",
-        "29": "warning",
-        "31": "error",
-        "34": "error",
-        "35": "error"
-      }
+        "34": "error"
+      },
+      "xhpast.php-version": "5.2.3",
+      "xhpast.php-version.windows": "5.3.0"
     }
   }
 }